[GIT PULL] Timekeeping changes for 3.4

From: john stultz
Date: Wed Feb 01 2012 - 22:04:03 EST

Hey Thomas,
Here's the first chunk of my big timekeeping change queue, for 3.4.
Most of it should be fairly straight forward cleanups, moving values
into the timekeeper structure and changing the locking away from

Again, since tip/timers/core hasn't been updated since 3.3 was out,
these are against Linus' head (actually, from a week or so ago). Let me
know if you'd like me to base them off of something else.

Also, the more aggressive changes that will allow for reduced lock hold
times, which I'm holding off for 3.5 or later, can be found here if you
want to take a look at them, or possibly merge them earlier into a
3.4-rt tree for extra testing:


The patches are available in the git repository at:

git://git.linaro.org/people/jstultz/linux.git fortglx/3.4/time

John Stultz (10):
time: Move total_sleep_time into the timekeeper structure
time: Move wall_to_monotonic into the timekeeper structure
time: Move xtime into timekeeeper structure
time: Move raw_time into timekeeper structure
time: Cleanup global variables and move them to the top
time: Add timekeeper lock
ntp: Cleanup timex.h
ntp: Access tick_length variable via ntp_tick_length()
ntp: Add ntp_lock to replace xtime_locking
time: Remove most of xtime_lock usage in timekeeping.c

Thomas Gleixner (2):
time: Reorder so the hot data is together
time: Move common updates to a function

include/linux/timex.h | 17 +--
kernel/time/ntp.c | 83 +++++++++---
kernel/time/timekeeping.c | 338 ++++++++++++++++++++++++--------------------
3 files changed, 248 insertions(+), 190 deletions(-)

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